Question 1

The activation of a prophage is called

Accepted Answer

A) activation. 
B) lysogeny. 
C) transformation. 
D) induction. 
E) adsorption. 
A) activation. 
B) lysogeny. 
C) transformation. 
D) induction. 
E) adsorption.

Question 2

Helical and icosahedral are terms used to describe the shape of a viral

Accepted Answer

A) spike. 
B) capsomere. 
C) envelope. 
D) capsid. 
E) core. 
A) spike. 
B) capsomere. 
C) envelope. 
D) capsid. 
E) core.

Question 3

Creutzfeldt-Jacob disease is

Accepted Answer

A) caused by a chronic latent virus. 
B) initiated by an oncogenic virus. 
C) caused by a viroid. 
D) a spongiform encephalopathy of humans. 
E) also called "mad cow disease." 
A) caused by a chronic latent virus. 
B) initiated by an oncogenic virus. 
C) caused by a viroid. 
D) a spongiform encephalopathy of humans. 
E) also called "mad cow disease."

Question 4

Which of the following is not a characteristic of a transformed cell?

Accepted Answer

A) viral nucleic acid integrated into host DNA 
B) decreased growth rate 
C) alterations in chromosomes 
D) changes in cell surface molecules 
E) capacity to divide indefinitely 
A) viral nucleic acid integrated into host DNA 
B) decreased growth rate 
C) alterations in chromosomes 
D) changes in cell surface molecules 
E) capacity to divide indefinitely

Question 5

Infectious protein particles are called

Accepted Answer

A) viroids. 
B) phages. 
C) prions. 
D) oncogenic viruses. 
E) spikes. 
A) viroids. 
B) phages. 
C) prions. 
D) oncogenic viruses. 
E) spikes.

Question 6

Host cells of viruses include

Accepted Answer

A) humans and other animals. 
B) plants and fungi. 
C) bacteria. 
D) protozoa and algae. 
E) All of the choices are correct. 
A) humans and other animals. 
B) plants and fungi. 
C) bacteria. 
D) protozoa and algae. 
E) All of the choices are correct.

Question 7

When a bacterium acquires a trait from its temperate phage,it is called

Accepted Answer

A) transformation. 
B) lysogenic conversion. 
C) viral persistence. 
D) transcription. 
E) translation. 
A) transformation. 
B) lysogenic conversion. 
C) viral persistence. 
D) transcription. 
E) translation.

Question 8

Who developed a rabies vaccine after realizing the disease was caused by something smaller than a bacterium?

Accepted Answer

A) Leewonhoek 
B) Koch 
C) Pasteur 
D) Cohn 
E) Ivanovski 
A) Leewonhoek 
B) Koch 
C) Pasteur 
D) Cohn 
E) Ivanovski

Question 9

Lysogeny refers to

Accepted Answer

A) altering the host range of a virus. 
B) latent state of herpes infections. 
C) virion exiting host cell. 
D) viral genome inserting into bacterial host chromosome. 
A) altering the host range of a virus. 
B) latent state of herpes infections. 
C) virion exiting host cell. 
D) viral genome inserting into bacterial host chromosome.

Question 10

A fully formed virus that can cause an infection in a host cell is called a virion.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following will not support viral cultivation?

Accepted Answer

A) live lab animals 
B) embryonated bird eggs 
C) primary cell cultures 
D) continuous cell cultures 
E) All of the choices will support viral cultivation. 
A) live lab animals 
B) embryonated bird eggs 
C) primary cell cultures 
D) continuous cell cultures 
E) All of the choices will support viral cultivation.

Question 12

The adeno-associated virus (AAV)and the delta agent are prions.

Accepted Answer

A) True 
 B)False

Question 13

Infectious naked strands of RNA that affect plants are called

Accepted Answer

A) viroids. 
B) phages. 
C) prions. 
D) oncogenic viruses. 
E) spikes. 
A) viroids. 
B) phages. 
C) prions. 
D) oncogenic viruses. 
E) spikes.

Question 14

Viruses that cause infection resulting in alternating periods of activity with symptoms and inactivity without symptoms are called

Accepted Answer

A) latent. 
B) oncogenic. 
C) prions. 
D) viroids. 
E) delta agents. 
A) latent. 
B) oncogenic. 
C) prions. 
D) viroids. 
E) delta agents.

Question 15

Reverse transcriptase synthesizes

Accepted Answer

A) a positive RNA strand from a negative RNA strand. 
B) a negative RNA strand from a positive RNA strand. 
C) viral RNA from DNA. 
D) viral DNA from RNA. 
A) a positive RNA strand from a negative RNA strand. 
B) a negative RNA strand from a positive RNA strand. 
C) viral RNA from DNA. 
D) viral DNA from RNA.

Question 16

Satellite viruses are

Accepted Answer

A) also called viroids. 
B) dependent on other viruses for replication. 
C) the cause of spongiform encephalopathies. 
D) significant pathogens of plants. 
A) also called viroids. 
B) dependent on other viruses for replication. 
C) the cause of spongiform encephalopathies. 
D) significant pathogens of plants.

Question 17

The envelope of enveloped viruses

Accepted Answer

A) is identical to the host plasma membrane. 
B) is only composed of host endomembrane. 
C) always includes spikes. 
D) is obtained by viral budding or exocytosis. 
E) makes the virus very susceptible to drug therapy. 
A) is identical to the host plasma membrane. 
B) is only composed of host endomembrane. 
C) always includes spikes. 
D) is obtained by viral budding or exocytosis. 
E) makes the virus very susceptible to drug therapy.

Question 18

Which of the following represents a virus family name?

Accepted Answer

A) Herpes simplex virus 
B) Herpesviridae 
C) Picornavirus 
D) Enterovirus 
E) Hepatitis B virus 
A) Herpes simplex virus 
B) Herpesviridae 
C) Picornavirus 
D) Enterovirus 
E) Hepatitis B virus

Question 19

Viruses mutate and some have not been discovered.

Accepted Answer

A) True 
 B)False

Question 20

Cells grown in culture form a/n

Accepted Answer

A) monolayer. 
B) bilayer. 
C) aggregate. 
D) plaque. 
A) monolayer. 
B) bilayer. 
C) aggregate. 
D) plaque.

Exam 6: An Introduction to the Viruses

The activation of a prophage is called

Helical and icosahedral are terms used to describe the shape of a viral

Creutzfeldt-Jacob disease is

Which of the following is not a characteristic of a transformed cell?

Infectious protein particles are called

Host cells of viruses include

When a bacterium acquires a trait from its temperate phage,it is called

Who developed a rabies vaccine after realizing the disease was caused by something smaller than a bacterium?

Lysogeny refers to

A fully formed virus that can cause an infection in a host cell is called a virion.

Which of the following will not support viral cultivation?

The adeno-associated virus (AAV)and the delta agent are prions.

Infectious naked strands of RNA that affect plants are called

Viruses that cause infection resulting in alternating periods of activity with symptoms and inactivity without symptoms are called

Reverse transcriptase synthesizes

Satellite viruses are

The envelope of enveloped viruses

Which of the following represents a virus family name?

Viruses mutate and some have not been discovered.

Cells grown in culture form a/n

The Main Themes of Microbiology

The Chemistry of Biology

Tools of the Laboratory: Methods for the Culturing of Microscopic Analysis of Microorganisms

Prokaryotic Profiles: The Bacteria and Archaea

Eukaryotic Cells and Microorganisms

Microbial Nutrition, Ecology, and Growth

Microbial Metabolism: the Chemical Crossroads of Life

Microbial Genetics

Genetic Engineering and Recombinant Dna

Physical and Chemical Control of Microbes

Drugs, Microbes, host-The Elements of Chemotherapy

Microbe-Human Interactions: Infection and Disease

Host Defenses I: Overview and Nonspecific Defenses

Host Defenses II: Specific Immunity and Immunization

Disorders in Immunity

Diagnosing Infections

Infectious Diseases Affecting the Skin and Eyes

Infectious Diseases Affecting the Nervous System

Infectious Diseases Affecting the Cardiovascular and Lymphatic Systems

Infectious Diseases Affecting the Respiratory System

Infectious Diseases Affecting the Gastrointestinal Tract

Infectious Diseases Affecting the Genitourinary System

Microbes and the Environment

Applied Microbiology and Food and Water Safety

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